The Essential Web Development Tool for User-Agent Detection. UAParser.js is the most comprehensive, compact, & up-to-date isomorphic JavaScript library to detect user's Browser, Engine, OS, CPU, and Device type/model. Runs either in browser (client-side) or node.js (server-side).
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About this launch
UAParser.js was launched by Faisal Salman in January 6th 2026.
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